<template>
  <view>
    <view class="cart-box" v-if="cart.length>0">
      <!-- 收获地址 -->
      <my-address></my-address>
      
      <!-- 购物车商品列表的标题区域 -->
      <view class="cart-title">
        <!-- 左侧的图标 -->
        <uni-icons type="shop" size="18"></uni-icons>
        <!-- 描述文本 -->
        <text class="cart-title-text">购物车</text>
      </view>
      
      <!-- 购物车列表 -->
      <my-goods 
        v-for="(item ,i) in cart"
        :goods="item"
        :isShowRadio="true"
        :isShowNumberBox="true"
        @radio-change="radioChangeHandler"
        @num-change="numChangeHandler"
        :key="i"
      ></my-goods>
      <!-- 结算栏 -->
      <my-settle></my-settle>
    </view>
    
    <!-- 空白购物车区域 -->
    <view class="empty-cart" v-else>
      <image src="/static/cart_empty@2x.png" class="empty-img"></image>
      <text class="tip-text">空空如也~</text>
    </view>
  </view>
</template>

<script>
  
  // 数据从vuex中来
  import { mapState, mapMutations } from 'vuex'
  // 导入mixin中的共同处理逻辑代码
  import tabBarBadge from '@/mixin/tabBar-index.js'
  
  export default {
    mixins: [tabBarBadge],
    data() {
      return {
        
      };
    },
    computed: {
      ...mapState('m_cart', ['cart'])
    },
    methods: {
      ...mapMutations('m_cart', ['updateGoodsState', 'updateGoodsCount']),
      radioChangeHandler(e){
        console.log(e)
        // 更新到vuex中
        this.updateGoodsState(e)
      },
      numChangeHandler(e){
        console.log(e)
        // 更新到vuex中
        this.updateGoodsCount(e)
      }
    },

  }
</script>

<style lang="scss">
  
  .cart-box {
    padding-bottom: 50px;
    .cart-title {
      height: 80rpx;
      display: flex;
      align-items: center;
      padding-left: 12rpx;
      border-bottom: 1px solid #efefef;
    
      .cart-title-text {
        margin-left: 20rpx;
      }
    }
  }
  
  
  .empty-cart {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 150px;
  
    .empty-img {
      width: 90px;
      height: 90px;
    }
  
    .tip-text {
      font-size: 12px;
      color: gray;
      margin-top: 15px;
    }
  }

</style>
